This past weekend, Microsoft released an update that it said “addresses the unexpected wake and battery drain behavior experienced by a small number of Surface Pro 2 customers who installed the December Windows Update.

“This should have no impact on users already running the October Windows Update,” the company said in a statement. “We’re working hard to address the remaining Surface Pro 2 items from the December Windows Update.”

This latest update, first reported by ZDNet, appears to be rolling out in waves.

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Welcome to Microsoft Pri0: That's Microspeak for top priority, and that's the news and observations you'll find here from Seattle Times technology reporter Matt Day. Send tips or comments to mday@seattletimes.com.